Method and system for using a bayesian belief network to ensure data integrity
First Claim
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1. A method for identifying plausible sources of error in a financial risk assessment (FRA) system, comprising:
- identifying, by a computer, a plurality of variables of the FRA system;
implementing, by the computer, a Bayesian network to represent implications between and among the plurality of variables;
generating, by the computer, an initial probability for each of the plurality of variables of the FRA system that values for each of the plurality of variables have not changed;
extracting, by the computer, observed data from one of the plurality of variables of the FRA system;
determining, by the computer, a change in a value of at least one of the plurality of variables based on the extracted factual data from the FRA system; and
assessing, by the computer, the initial probability for the one of the plurality of variables of the FRA system based on the change in the value of one of the plurality of variables.
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Abstract
The present invention relates to a method and system for assessing the risks and/or exposures associated with financial transactions using various statistical and probabilistic techniques. Specifically, the present invention relates to a method and system for identifying plausible sources of error in data used as input to financial risk assessment systems using Bayesian belief networks as a normative diagnostic tool to model relationships between and among inputs/outputs of the risk assessment system and other external factors.
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16 Claims
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1. A method for identifying plausible sources of error in a financial risk assessment (FRA) system, comprising:
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identifying, by a computer, a plurality of variables of the FRA system; implementing, by the computer, a Bayesian network to represent implications between and among the plurality of variables; generating, by the computer, an initial probability for each of the plurality of variables of the FRA system that values for each of the plurality of variables have not changed; extracting, by the computer, observed data from one of the plurality of variables of the FRA system; determining, by the computer, a change in a value of at least one of the plurality of variables based on the extracted factual data from the FRA system; and assessing, by the computer, the initial probability for the one of the plurality of variables of the FRA system based on the change in the value of one of the plurality of variables. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for identifying plausible sources of error, the system comprising:
a financial risk assessment (FRA) system comprising a server, wherein the server is configured to; identify a plurality of variables of the FRA system; implement a Bayesian network to represent implications between and among the plurality of variables; generate an initial probability for each of the plurality of variables of the FRA system that values for each of the plurality of variables have not changed; extract observed data from one of the plurality of variables of the FRA system; determine a change in a value of at least one of the plurality of variables based on the extracted factual data from the FRA system; and assess the initial probability for the one of the plurality of variables of the FRA system based on the change in the value of one of the plurality of variables. - View Dependent Claims (11, 12, 13, 14, 15, 16)
Specification